diff options
| author | Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2020-12-01 08:40:19 +0300 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2020-12-10 12:40:10 +0300 |
| commit | ee42bedc85a6e87791d5c20da6f2d150188cde54 (patch) | |
| tree | bc4e934766a3f96d7ba66e094e7ceab64e8414e3 /drivers/net/can/spi | |
| parent | 2c0ac9208135c75b9afec67b2819329ff41a5355 (diff) | |
| download | linux-ee42bedc85a6e87791d5c20da6f2d150188cde54.tar.xz | |
can: mcp251xfd: Add support for internal loopback mode
MCP251xFD supports internal loopback mode which can be used to verify CAN
functionality in the absence of a real CAN device.
Link: https://lore.kernel.org/r/20201201054019.11012-1-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
[mkl: mcp251xfd_get_normal_mode(): move CAN_CTRLMODE_LOOPBACK check to front]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/spi')
| -rw-r--r-- | drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c index 20cbd5c446f5..77129d5f410b 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c @@ -965,7 +965,10 @@ static u8 mcp251xfd_get_normal_mode(const struct mcp251xfd_priv *priv) { u8 mode; - if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) + + if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK) + mode = MCP251XFD_REG_CON_MODE_INT_LOOPBACK; + else if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) mode = MCP251XFD_REG_CON_MODE_LISTENONLY; else if (priv->can.ctrlmode & CAN_CTRLMODE_FD) mode = MCP251XFD_REG_CON_MODE_MIXED; @@ -2881,9 +2884,9 @@ static int mcp251xfd_probe(struct spi_device *spi) priv->can.do_get_berr_counter = mcp251xfd_get_berr_counter; priv->can.bittiming_const = &mcp251xfd_bittiming_const; priv->can.data_bittiming_const = &mcp251xfd_data_bittiming_const; - priv->can.ctrlmode_supported = CAN_CTRLMODE_LISTENONLY | - CAN_CTRLMODE_BERR_REPORTING | CAN_CTRLMODE_FD | - CAN_CTRLMODE_FD_NON_ISO; + priv->can.ctrlmode_supported = CAN_CTRLMODE_LOOPBACK | + CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_BERR_REPORTING | + CAN_CTRLMODE_FD | CAN_CTRLMODE_FD_NON_ISO; priv->ndev = ndev; priv->spi = spi; priv->rx_int = rx_int; |